| Prewett, Marshall G-2-125785 | Virtex Operating Company, Inc. | Yorktown, South (Wilcox 9930) | De Witt | 1 | 46.5K | 506K | Jan 1993 – Jul 2013 |
| Garrison Gas Unit No. 1 G-6-222670 | Virtex Operating Company, Inc. | Garrison (Travis Peak) | Nacogdoches | 1 | 23.3K | 913K | Sep 2006 – Mar 2023 |
| Sandeen, John G-1-129294 | Virtex Operating Company, Inc. | Jourdanton | Atascosa | 1 | 18.1K | 2.47M | Jan 1993 – Jul 2009 |
| Pearlstone, Claire G-1-74324 | Virtex Operating Company, Inc. | Jourdanton | Atascosa | 1 | 17.3K | 3.35M | Jan 1993 – Aug 2011 |
| Wallace, J. C. G-1-144910 | Virtex Operating Company, Inc. | Jourdanton | Atascosa | 1 | 12.3K | 2.05M | Mar 1993 – Nov 1997 |
| Killam G-1-170313 | Virtex Operating Company, Inc. | Atlee (Olmos) | La Salle | 1 | 9.81K | 441K | Aug 1998 – Nov 2010 |
| Longoria G-4-166094 | Virtex Operating Company, Inc. | McAllen Ranch (Vicksburg N) | Hidalgo | 1 | 8.97K | 514K | Oct 1997 – Oct 2010 |
| Fite, L.E. G-4-174421 | Virtex Operating Company, Inc. | Triple -a- (Frio 7300 Sd.) | San Patricio | 1 | 8.19K | 215K | Sep 1999 – Nov 2000 |
| S.P.J.S.T. Lodge G-1-210848 | Virtex Operating Company, Inc. | Jourdanton | Atascosa | 1 | 5.94K | 1.1M | Jul 2005 – Aug 2015 |
| Werner, C. G-4-145919 | Virtex Operating Company, Inc. | Whitted (6900) | Hidalgo | 1 | 5.89K | 1.95M | Mar 1993 – Dec 2014 |
| Marie Dueser Gas Unit G-2-115111 | Virtex Operating Company, Inc. | Henze, E. (10,400 Sand) | De Witt | 1 | 5.47K | 111K | Jan 1993 – Feb 2011 |
| Garrison Gas Unit 7 G-6-96111 | Virtex Operating Company, Inc. | Garrison (Travis Peak) | Nacogdoches | 1 | 5.02K | 160K | Jan 1993 – Mar 2012 |
| Harlan, R. K. G-1-137655 | Virtex Operating Company, Inc. | Doering Ranch (Georgetown) | Frio | 1 | 4.19K | 181K | Jan 1996 – Sep 2007 |
| Longoria G-4-171795 | Virtex Operating Company, Inc. | San Ramon (8300) | Hidalgo | 1 | 3.98K | 271K | Jan 1999 – Jun 2011 |
| Wilson, F. C. G-1-118866 | Virtex Operating Company, Inc. | Jourdanton | Atascosa | 1 | 3.66K | 410K | Jan 1993 – Sep 1995 |
| Hare, K. T. G-3-123437 | Virtex Operating Company, Inc. | Iola (Woodbine 9700) | Grimes | 1 | 3.66K | 325K | Jan 1993 – Oct 2016 |
| Longoria G-4-155347 | Virtex Operating Company, Inc. | San Ramon (9500) | Hidalgo | 1 | 2.29K | 144K | Jul 1995 – Dec 2001 |
| Alamo National Bank Trustee G-1-66892 | Virtex Operating Company, Inc. | Green Branch (Wilcox 2-D) | McMullen | 1 | 2.04K | 675K | Jan 1993 – Apr 2016 |
| Burkholder, Alice W. G-1-125987 | Virtex Operating Company, Inc. | Encinal (5800) | La Salle | 1 | 1.77K | 471K | Jan 1993 – Feb 2011 |
| Beever Farms Inc C G-1-260313 | Virtex Operating Company, Inc. | Doering Ranch (Georgetown) | Frio | 1 | 1.62K | 69.2K | Feb 2011 – Nov 2012 |
| Spjst Lodge G-1-278609 | Virtex Operating Company, Inc. | Jourdanton (Georgetown) | Atascosa | 1 | 796 | 96K | Sep 2015 – Apr 2022 |
| Coleman Heirs 507 A G-1-243048 | Virtex Operating Company, Inc. | Sun T S H (Olmos) | La Salle | 1 | 716 | 42.7K | Aug 2008 – Jul 2016 |
| Storey Estate G-1-135629 | Virtex Operating Company, Inc. | White Kitchen (Edwards Lime) | La Salle | 1 | 647 | 1.05M | Jan 1993 – Jun 2014 |
| Burkholder, Alice W. G-1-44895 | Virtex Operating Company, Inc. | Encinal (5800) | La Salle | 1 | 613 | 189K | Jan 1993 – Aug 2002 |
| Harlan, R. K. G-1-244941 | Virtex Operating Company, Inc. | Doering Ranch (Edwards) | Frio | 1 | 599 | 123K | Nov 2008 – Oct 2009 |
| VT Coleman Heirs 503 G-1-233686 | Virtex Operating Company, Inc. | Sun T S H (Olmos) | La Salle | 1 | 598 | 62K | Jul 2008 – Jul 2016 |
| Floerke, Roy G-4-181238 | Virtex Operating Company, Inc. | Midway (Douglas 6630) | San Patricio | 1 | 584 | 36.8K | Feb 2001 – Jun 2001 |
| Krause, A.L. Estate G-4-98796 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | La Salle | 1 | 433 | 332K | Jan 1993 – Dec 2017 |
| Harlan, R. K. G-1-244790 | Virtex Operating Company, Inc. | Doering Ranch (Georgetown) | Frio | 1 | 337 | 272K | Dec 2008 – Feb 2018 |
| Burkholder, A. W. Estate G-4-56300 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | Webb | 1 | 294 | 71.8K | Jan 1993 – Jul 2010 |
| Harlan, R. K. G-1-74309 | Virtex Operating Company, Inc. | Doering Ranch (Georgetown) | Frio | 1 | 257 | 293K | May 1995 – Apr 2009 |
| Dawson G-4-97531 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | Webb | 1 | 235 | 237K | Jan 1993 – Aug 2017 |
| Pechal-Sirny G-1-220879 | Virtex Operating Company, Inc. | Doering Ranch (Edwards) | Frio | 1 | 221 | 192K | Aug 2006 – Nov 2008 |
| Hunter, Larry T. et Al G-4-118529 | Virtex Operating Company, Inc. | Tom Walsh (Escondido) | Webb | 1 | 206 | 96.7K | Jan 1993 – Jan 2001 |
| Hunter, Larry T. et Al G-4-122117 | Virtex Operating Company, Inc. | Tom Walsh (Escondido) | Webb | 1 | 203 | 105K | Jan 1993 – Jan 2001 |
| Lowry G-1-243840 | Virtex Operating Company, Inc. | Tri Bar (Olmos) | La Salle | 1 | 157 | 18.6K | Nov 2008 – Nov 2020 |
| Garner G-4-74911 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | Webb | 1 | 111 | 138K | Jan 1993 – Sep 2013 |
| Stokes, I.C. G-4-59368 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | Webb | 1 | 80 | 79.8K | Jan 1993 – Mar 2010 |
| Garner G-4-74910 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | Webb | 1 | 65 | 76.8K | Jan 1993 – Mar 2001 |
| Benavides G-4-67260 | Virtex Operating Company, Inc. | Mesquite (Escondido) | Webb | 1 | 59 | 116K | Jan 1993 – Oct 2013 |
| Harlan, R. K. G-1-225023 | Virtex Operating Company, Inc. | Doering Ranch (Georgetown) | Frio | 1 | 34 | 27.2K | Jan 2007 – Feb 2008 |
| Benavides-CNR G-4-93417 | Virtex Operating Company, Inc. | Mesquite (Escondido) | Webb | 1 | 32 | 56.5K | Feb 1993 – Aug 2016 |
| Benavides G-4-72714 | Virtex Operating Company, Inc. | Mesquite (Escondido) | Webb | 1 | 31 | 61.2K | Jan 1993 – Aug 2016 |
| Harlan, R. K. G-1-220856 | Virtex Operating Company, Inc. | Doering Ranch (Edwards) | Frio | 1 | 29 | 140K | Jul 2006 – Apr 2009 |
| Johns-Stokes Unit G-4-54964 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | Webb | 1 | 27 | 141K | Jan 1993 – Jan 2018 |
| James G-4-95612 | Virtex Operating Company, Inc. | Tom Walsh (Olmos) | Webb | 1 | 27 | 212K | Jan 1993 – Mar 2019 |
| Benavides G-4-77924 | Virtex Operating Company, Inc. | Mesquite (Escondido) | Webb | 1 | 25 | 59.1K | Jan 1993 – Dec 2012 |
| Benavides G-4-74864 | Virtex Operating Company, Inc. | Mesquite (Escondido) | Webb | 1 | 25 | 35.9K | Jan 1993 – Apr 2005 |
| Middleton, T. Et.al. -B- G-4-69680 | Virtex Operating Company, Inc. | Booth Ranch (Wilcox 3500) | Webb | 1 | 23 | 42.5K | Jan 1993 – Mar 2000 |
| Alamo National Bank Trustee G-1-122290 | Virtex Operating Company, Inc. | Green Branch (Wilcox 2-D) | McMullen | 1 | 23 | 198K | Jan 1993 – Apr 2003 |